hossram64 Posted July 20, 2009 Report Share Posted July 20, 2009 I just reading threw some old post see conflicting advice on which fluid to use on the transfer case? Can I use royal purple, or gm auto track my truck is a 03 AWD. Which fluid would be the best and recommended to use? Thanks for any help wanted to change tommorow. Quote Link to comment Share on other sites More sharing options...
F1SSS Posted July 20, 2009 Report Share Posted July 20, 2009 (edited) my 2003 manual says "Transfer Case (All Wheel Drive)-Dexron III Automatic Transmission fluid." edit-hopefully get to meet ya sometime soon (maybe LVD in the fall). Your truck sounds BA from your mods list. Edited July 20, 2009 by 03maSSS (see edit history) Quote Link to comment Share on other sites More sharing options...
hossram64 Posted July 20, 2009 Author Report Share Posted July 20, 2009 my 2003 manual says "Transfer Case (All Wheel Drive)-Dexron III Automatic Transmission fluid." edit-hopefully get to meet ya sometime soon (maybe LVD in the fall). Your truck sounds BA from your mods list. Thanks yeah hopefully I can make it. Yeah I cant stop modding lol. Quote Link to comment Share on other sites More sharing options...
rms4545 Posted July 20, 2009 Report Share Posted July 20, 2009 I am from ct and i have been lookin for your truck. lol. seen a couple red ones here and there but was never close enough to tell if it was blown or not. Do u have the factory hood or is it aftermarket? Quote Link to comment Share on other sites More sharing options...
Krambo Posted July 20, 2009 Report Share Posted July 20, 2009 The blue synthetic GM Autotrac II fluid over the tranny fluid IMHO. With the viscous clutch design, it helps with noise (as well as the Autotrac style T-cases). I believe there is a TSB on it...next time you are at the dealer, ask about it. Quote Link to comment Share on other sites More sharing options...
delay18 Posted July 20, 2009 Report Share Posted July 20, 2009 GM rec on it is Manual Trans/ Transfer case fluid... Nothing special Quote Link to comment Share on other sites More sharing options...
Berry Posted July 21, 2009 Report Share Posted July 21, 2009 I used Autotrac II, in my SSS, and my wifes Buick Rainer, both are running smoother, and quieter...... Quote Link to comment Share on other sites More sharing options...
hossram64 Posted July 21, 2009 Author Report Share Posted July 21, 2009 stock hood, my truck looks all stock. Wanted it to be a sleeper. What part of CT you in? Thanks everyone for the advice. Quote Link to comment Share on other sites More sharing options...
hossram64 Posted July 21, 2009 Author Report Share Posted July 21, 2009 stock hood, my truck looks all stock. Wanted it to be a sleeper. What part of CT you in? Thanks everyone for the advice. NVM lol I remember where you are from. Yeah mostly in Bristol, Cheshire, and Wallingford. Quote Link to comment Share on other sites More sharing options...
rms4545 Posted July 21, 2009 Report Share Posted July 21, 2009 sleepers are always fun. Im in cromwell but always down towards southington, wolcott area. Quote Link to comment Share on other sites More sharing options...
SuperStock Posted July 21, 2009 Report Share Posted July 21, 2009 Royal Purple Quote Link to comment Share on other sites More sharing options...
hossram64 Posted July 21, 2009 Author Report Share Posted July 21, 2009 So I went and got gm auto track for the transfer case. I picked up royal purple 75-90 for rear diff, and valvoline 80-90 for the front diff. Is 80-90 the right stuff for the front diff? in mr.p hot to I saw that he used 80-90 thats why i picked it up. Thanks guys for all the help Quote Link to comment Share on other sites More sharing options...
Hankg42 Posted July 22, 2009 Report Share Posted July 22, 2009 (edited) The blue synthetic GM Autotrac II fluid over the tranny fluid IMHO. With the viscous clutch design, it helps with noise (as well as the Autotrac style T-cases). I believe there is a TSB on it...next time you are at the dealer, ask about it. I use AutoTrak II as well. Bought a few quarts at the local Chevy dealer (when he was still here). Edited July 22, 2009 by Hankg42 (see edit history) Quote Link to comment Share on other sites More sharing options...
F1SSS Posted July 22, 2009 Report Share Posted July 22, 2009 A reading from the 2003 silverado manual: front axle (80w-90) rear axle (75w-90) Mr. P is right Quote Link to comment Share on other sites More sharing options...
slammedbowtie Posted July 22, 2009 Report Share Posted July 22, 2009 the manual... lol i use the blue stuff Quote Link to comment Share on other sites More sharing options...
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